What are blended fibres?A. Mixture of two natural fibresB. Mixture of two synthetic fibresC. Mixture of natural and synthetic fibresD. All of above

Blended fibers are materials made by combining different types of fibers to achieve desirable properties that a single type of fiber might not provide on its own. They can include combinations of natural fibers, synthetic fibers, or both.

Here's a breakdown of the options:

A. Mixture of two natural fibres: This refers to blending two types of natural fibers, such as cotton and wool. This isn't the broad definition of blended fibers but is a specific example.

B. Mixture of two synthetic fibres: This refers to blending synthetic fibers like polyester and nylon. Again, this is a specific example rather than the general definition.

C. Mixture of natural and synthetic fibres: This is the broadest definition and includes a combination of natural fibers (like cotton or wool) with synthetic fibers (like polyester or nylon). This type of blend is often used to combine the advantages of both fiber types, such as improving durability, comfort, or cost.

D. All of the above: This option encompasses all types of fiber blends, including those that mix natural fibers, synthetic fibers, or both.

Therefore, the correct answer is:

D. All of the above